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@with tats @anni @High Letters Patent No. 72,784, dated December 81, 1867.

IMPROVEMENT IN ADJUSTABLE BASES AND BOOKS FOR DOORS.

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TO ALL WHOM IT MAY CON CERN: l

Be it known that we, WILLIAM Bissen and FLEMING G. Hanna, ot Yreka, Siskiyoucounty, California, have invented a new and -nset`ul-ImprovementAin Hasps and Hooks for Gates and Doors; and we do hereby decla-re that the following is a full, clear, and exactdescription` thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming a. partfof this specification.

This invention relatesto an improvement in hasps and hooks for gates and doors, intended to meet the shrinkage of timber which takes place during long-continued dry Weather, and the swelling consequent on c`ontinued rains. It consists in connecting either the hook or the hasp by a spring in the shank of the hook. In

'the accompanying drawings- Figure 1 is a top view of a boxhasp, with the top of the box'removed.

Figure 2 is a top View of a. hook attachednby a. set-screw passing through a slot, and

Figure 3 is a. top view of hasp, ivith a hook attached by a, spiral, figs. 2 and' 3 representing alternative arrangements of our improvement, as shown in tig. 1.

. Similar letters of reference indicate correspbnding parts.

A is the bottom plate of the box-hasp. B the hnsp, held, in the case shown in Eg. 1, to the main plate by the spiral, spring 0attached to said main'platc A, and to the shank b of the hasp, and by theV bolt D passing through the slot 'in thesaid shank 6. The bolt D is provided with a shoulder, on which the hasp sits, and the saidshoulder, together with al rest, E, at the front end of the box, and ot' the same height as said shoulder, keeps the liasp B olf the bottom plate A, thereby diminishing friction and wear and tear of the parts. The

box-hasp B may be a joint-hasp, and may be used against a corne; as well'as upon a dat surface. The hook F,

in the case shown in fig. 1, is pivoted to the hasp. In that shown in iig. 2, the hook F is attached, by the spiral spring C, to a. pinon the hasp B; and in the case sliorvn in iig. 3, the hook is adjustable by the set-screwg passing through'thc Slot By the use ofy any of these alternative forms, the shrinkage or swelling before mentioned is compensated for; and while the cost of oui` improvement very slightly exceeds that of thc ordinary hooks-and hasps of similar description, our hooks and hasps are far more-durable.

We claim as new, and d esire to secure by Letters Patent- 1. Thespring C,'in combination wit-h'the box-hasp B, for self-adjustment in contraction and 'expansion of doors, the., substantially as above set forth and described 2. The said spring C, in combination with the adjustable hook F and hasp B, substantially as and for the purpose above set forthl and described'.

WILLIAM BISBEE,

FLEMING vG. HEARN.

Witnesses:

L'. W. KnTeHAM, R. S. GREEN. 

